\begin{tikzpicture}[>=Stealth,
    every node/.style={fill=white, inner sep=1pt},
]
    \tikzset{
        pics/yingshe/.style n args={2}{
            code = {
                \draw [->] (0, 0) -- (3, 0);
                \draw (3, 0) -- (5, 0) node [right] {$#2$};
                \node at (0, 0) {$#1$};
            }
        }
    }

    \foreach \x/\y [count=\i] in {
        a+b/a^2-b^2,
        a^2+ab+b^2/ ,
        a^3 + a^2b + ab^2 + b^3/
    } {
        \draw (0, 3.5-0.7*\i) pic {yingshe={\x}{\y}};
    }
    \node at (2.8, 3.2) {乘以$a - b$};
    \draw (0, 1.75) ellipse [x radius=1.7, y radius=2];
    \draw (5.5, 1.75) ellipse [x radius=1.7, y radius=2];
    \node at (0, 0.6) {$\cdots$};
    \node at (5.5, 0.6) {$\cdots$};
\end{tikzpicture}
